﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace L1
{
    class Program
    {
        static void Main(string[] args)
        {
           
            {
                Console.WriteLine("请输入第一个数");
                int a = int.Parse(Console.ReadLine());

                Console.WriteLine("请输入第二个数");
                int b = int.Parse(Console.ReadLine());

                Console.WriteLine("请选择运算符");
                Console.WriteLine("1.+ 2.- 3.* 4./");
                int c = int.Parse(Console.ReadLine());
                Fang fa = new Fang();

                switch (c)
                {
                    case 1:
                        Jia jia = new Jia(a, b);
                        fa.calculate(jia);
                        break;
                    case 2:
                        Jian jian = new Jian(a, b);
                        fa.calculate(jian);
                        break;
                    case 3:
                        Chen chen = new Chen(a, b);
                        fa.calculate(chen);
                        break;
                    case 4:
                        Chu chu = new Chu(a, b);
                        fa.calculate(chu);
                        break;
                    default:
                        break;
                }


            }
        }
    }
}
